• 文献标题:   CZTS Decorated on Graphene Oxide as an Efficient Electrocatalyst for High-Performance Hydrogen Evolution Reaction
  • 文献类型:   Article
  • 作  者:   DIGRASKAR RV, SAPNER VS, MALI SM, NARWADE SS, GHULE AV, SATHE BR
  • 作者关键词:  
  • 出版物名称:   ACS OMEGA
  • ISSN:   2470-1343
  • 通讯作者地址:   Dr Babasaheb Ambedkar Marathwada Univ
  • 被引频次:   7
  • DOI:   10.1021/acsomega.8b03587
  • 出版年:   2019

▎ 摘  要

Cu2ZnSnS4 (CZTS) was synthesized by the sonochemical method using 2-methoxyethanol as the solvent and subsequently decorated onto graphene oxide (GO synthesized by the modified Hummers' method) using two different approaches such as in situ growth and ex situ synthesis followed by deposition. Preliminary characterizations indicated that the synthesized CZTS belongs to the kesterite structure with a sphere-like morphology. The in situ-synthesized CZTS/GO (I-CZTS/GO) composite is used as an efficient electrocatalyst for hydrogen evolution reaction (HER) which revealed superior electrocatalytic activity with a reduced overpotential (39.3 mV at 2 mA cm(-2) ), Tafel slope (70 mV dec (-1)), a larger exchange current density of 908 mA cm(-2) and charge transfer resistance (5 Omega), significantly different from pure CZTS. Besides, the I-CZTS/GO composite exhibits highest HER performance with high current stability of which shows no noticeable degradation after i-t amperometry. The catalytic activity demonstrates that the I-CZTS/GO composite could be a promising electrocatalyst in hydrogen production from their cooperative interactions.